:root {
  /* Core color system: dark charcoal + muted gold accent */
  --color-bg: #0d0f12;
  --color-bg-soft: #14181e;
  --color-surface: #f5f2eb;
  --color-text: #f2f4f7;
  --color-text-dark: #1a1d21;
  --color-muted: #a0a6b0;
  --color-accent: #b89c62;
  --color-accent-strong: #d5ba82;
  --color-border: rgba(255, 255, 255, 0.14);
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.35);

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --transition-fast: 220ms ease;
  --transition-medium: 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

img {
  width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1380px, 96%);
  margin: 0 auto;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong));
  z-index: 1000;
}

.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 900;
  transition: background-color var(--transition-fast), backdrop-filter var(--transition-fast), border-color var(--transition-fast);
}

.site-header.scrolled {
  background: rgba(11, 13, 16, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-logo {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.main-nav {
  position: absolute;
  top: 76px;
  left: 0;
  right: 0;
  padding: var(--space-6);
  display: grid;
  gap: var(--space-4);
  background: rgba(11, 13, 16, 0.92);
  border-bottom: 1px solid var(--color-border);
  transform-origin: top;
  transform: scaleY(0);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.main-nav.open {
  transform: scaleY(1);
  opacity: 1;
  pointer-events: auto;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
}

.nav-cta {
  color: var(--color-accent-strong) !important;
}

.nav-toggle {
  display: inline-grid;
  gap: 6px;
  padding: 6px;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle.active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background-image: url('assets/pexels-blackboard-1846865_1920.jpg');
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  will-change: transform;
}

.hero-overlay {
  background: linear-gradient(118deg, rgba(10, 11, 13, 0.88) 15%, rgba(10, 11, 13, 0.6) 48%, rgba(10, 11, 13, 0.78) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: clamp(120px, 20vh, 200px);
  padding-bottom: var(--space-20);
  max-width: 85%;
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent-strong);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-5);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.4rem, 7vw, 5.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero-sub {
  max-width: 56ch;
  margin: var(--space-6) 0 var(--space-10);
  color: rgba(241, 243, 247, 0.85);
  font-size: clamp(1rem, 1.9vw, 1.2rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: 999px;
  padding: 0.85rem 1.45rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.btn::after {
  content: '';
  position: absolute;
  left: var(--ripple-x, 50%);
  top: var(--ripple-y, 50%);
  translate: -50% -50%;
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  transform: scale(0);
  opacity: 0;
  pointer-events: none;
}

.btn.ripple::after {
  animation: ripple 580ms ease-out;
}

.btn-primary {
  color: #111;
  background: linear-gradient(110deg, var(--color-accent), var(--color-accent-strong));
  box-shadow: 0 12px 24px rgba(184, 156, 98, 0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(184, 156, 98, 0.36);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-text);
}

.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: var(--space-8);
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-indicator span {
  display: block;
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.15), var(--color-accent-strong));
  animation: float 1.7s ease-in-out infinite;
}

.section {
  padding: clamp(3.8rem, 8vw, 6.8rem) 0;
}

.section-light {
  background: var(--color-surface);
  color: var(--color-text-dark);
}

.section-dark {
  background: linear-gradient(180deg, #0c0f13, #10151c);
}

.section-head {
  margin-bottom: clamp(1.9rem, 4vw, 3.5rem);
  max-width: 760px;
}

h2 {
  font-size: clamp(1.9rem, 4vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: 0 16px 40px rgba(14, 16, 20, 0.08);
  border: 1px solid rgba(15, 18, 24, 0.08);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(14, 16, 20, 0.12);
}

.service-index {
  display: inline-block;
  font-size: 2.4rem;
  font-weight: 900;
  color: rgba(184, 156, 98, 0.62);
  letter-spacing: -0.03em;
}

.service-card h3 {
  margin: var(--space-4) 0 var(--space-3);
  font-size: 1.25rem;
  color: #111722;
}

.service-card p {
  margin: 0;
  color: #475062;
}

.stats-grid {
  display: grid;
  gap: var(--space-6);
}

.stat {
  padding: var(--space-6) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.stat-value {
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 1;
  font-weight: 900;
  color: var(--color-accent-strong);
}

.stat-label {
  margin: var(--space-3) 0 0;
  max-width: 34ch;
  color: rgba(240, 242, 247, 0.8);
}

.timeline {
  display: grid;
  gap: var(--space-6);
}

.timeline-item {
  padding: var(--space-6);
  border: 1px solid rgba(14, 16, 20, 0.1);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 14px 36px rgba(14, 16, 20, 0.07);
}

.timeline-step {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7f8591;
  font-weight: 700;
}

.timeline-item h3 {
  margin: var(--space-3) 0 var(--space-2);
  font-size: 1.3rem;
}

.timeline-item p {
  margin: 0;
  color: #4f5664;
}

.section-quote {
  background-image: linear-gradient(rgba(10, 11, 13, 0.85), rgba(10, 11, 13, 0.85)), url('assets/nattanan23-money-2724241_1920.jpg');
  background-size: cover;
  background-position: center;
  text-align: center;
}

blockquote {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 4.4rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.insights-grid {
  display: grid;
  gap: var(--space-6);
}

.insight-card {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 16px 40px rgba(16, 18, 24, 0.1);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.insight-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 22px 52px rgba(16, 18, 24, 0.15);
}

.insight-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.insight-content {
  padding: var(--space-6);
}

.insight-content p {
  margin: 0;
  color: #8d94a0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 600;
}

.insight-content h3 {
  margin-top: var(--space-3);
  font-size: 1.2rem;
  color: #12161f;
}

.insight-content .read-more {
  margin-top: var(--space-4);
  display: inline-block;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8b6d37;
  font-weight: 700;
}

.contact-panel {
  border-radius: var(--radius-lg);
  padding: clamp(1.2rem, 4vw, 2.6rem);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: var(--space-8);
}

.contact-copy p {
  margin: var(--space-4) 0 0;
  color: rgba(242, 244, 247, 0.82);
}

.contact-form {
  display: grid;
  gap: var(--space-4);
}

.contact-form label {
  display: grid;
  gap: 0.42rem;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(233, 236, 243, 0.86);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
  padding: 0.78rem 0.95rem;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent-strong);
  box-shadow: 0 0 0 3px rgba(184, 156, 98, 0.22);
}

.form-feedback {
  margin: 0;
  min-height: 1.2rem;
  font-size: 0.88rem;
  color: var(--color-accent-strong);
}

.site-footer {
  background: #090b0e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.footer-wrap p {
  margin: 0;
  color: rgba(221, 224, 231, 0.66);
}

.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.28);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: rgba(241, 244, 250, 0.9);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.social-links a:hover {
  background: rgba(184, 156, 98, 0.16);
  border-color: rgba(184, 156, 98, 0.7);
}

.cookie-banner {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  max-width: 360px;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: rgba(9, 12, 16, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow-soft);
  z-index: 999;
}

.cookie-banner.hidden {
  display: none;
}

.cookie-banner p {
  margin: 0 0 var(--space-4);
  color: rgba(239, 242, 247, 0.86);
  font-size: 0.94rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }
  50% {
    transform: translateY(8px);
    opacity: 1;
  }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.55;
  }
  100% {
    transform: scale(22);
    opacity: 0;
  }
}

@media (min-width: 760px) {
  /* Desktop layout upgrades */
  .container {
    width: min(1420px, 94%);
  }

  .main-nav {
    position: static;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--space-6);
    background: transparent;
    border-bottom: 0;
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav a {
    position: relative;
    font-size: 0.92rem;
  }

  .main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -0.35rem;
    width: 0;
    height: 2px;
    background: var(--color-accent-strong);
    transition: width var(--transition-fast);
  }

  .main-nav a:hover::after {
    width: 100%;
  }

  .nav-toggle {
    display: none;
  }

  .services-grid,
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .timeline {
    grid-template-columns: repeat(3, 1fr);
  }

  .insights-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-panel {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
  }

  .cookie-banner {
    right: var(--space-6);
    bottom: var(--space-6);
  }
}

/* Article pages */
body.article-page {
  background: var(--color-surface);
  color: var(--color-text-dark);
}

body.article-page .site-header {
  background: rgba(245, 242, 235, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(17, 23, 34, 0.1);
}

body.article-page .brand,
body.article-page .main-nav a {
  color: #111722;
}

body.article-page .main-nav {
  background: rgba(245, 242, 235, 0.98);
  border-bottom: 1px solid rgba(17, 23, 34, 0.1);
}

body.article-page .nav-toggle span {
  background: #111722;
}

.article-main {
  padding: clamp(110px, 14vh, 150px) 0 clamp(60px, 8vw, 100px);
}

.article-header {
  max-width: 980px;
  margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.article-header h1 {
  font-size: clamp(2rem, 4.8vw, 4rem);
  color: #111722;
}

.article-meta {
  color: #667085;
  margin-top: var(--space-4);
  font-size: 0.95rem;
}

.article-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 18px 42px rgba(16, 18, 24, 0.16);
  margin-bottom: clamp(1.6rem, 3vw, 2.6rem);
}

.article-cover img {
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.article-content {
  max-width: 860px;
  display: grid;
  gap: var(--space-5);
}

.article-lead {
  font-size: clamp(1.15rem, 2.2vw, 1.42rem);
  line-height: 1.75;
  color: #1f2a3a;
  font-weight: 500;
}

.article-content p {
  margin: 0;
  color: #2f3746;
  font-size: 1.05rem;
}

.article-content h2 {
  margin-top: var(--space-4);
  font-size: clamp(1.3rem, 2.2vw, 1.9rem);
  color: #121722;
}

.article-content ul {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.5rem;
  color: #2f3746;
}

.article-content li {
  line-height: 1.7;
}

.article-note {
  margin: 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid #8b6d37;
  background: rgba(184, 156, 98, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #2a3342;
}

.back-link {
  display: inline-flex;
  margin-top: var(--space-8);
  color: #8b6d37;
  font-weight: 700;
  letter-spacing: 0.04em;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation: none !important;
    transition: none !important;
  }
}